[9mmkungfu]

Today, it was 6° outside. The 335d start to put out warm air after about 3 minutes of steady driving.

For those that have EGR blocked/tuned out or a combination of the two, do you notice any significant increase in engine warm up time?

Significant increase (for myself) can be defined as at least an extra 5 minutes.

[TorqueAddict]

Originally Posted by 9mmkungfu

Today, it was 6° outside. The 335d start to put out warm air after about 3 minutes of steady driving.

For those that have EGR blocked/tuned out or a combination of the two, do you notice any significant increase in engine warm up time?

Significant increase (for myself) can be defined as at least an extra 5 minutes.

Yes, it does take longer than usual to warm up. It was -16C here in Toronto a few days back, and it took about 10-12 minutes of driving to get the coolant temps up to 60C. When i fired it up, just under a minute, it went to 17-20C.

[NWCT335d]

In respect to the heating system putting out warm air, isn't there an electric heater of some sort that kicks in initially to start providing warm air before the coolant temps rise and are able to do so through conventional means?

[floydarogers]

Originally Posted by NWCT335d

In respect to the heating system putting out warm air, isn't there an electric heater of some sort that kicks in initially to start providing warm air before the coolant temps rise and are able to do so through conventional means?

+ Yes, there is an electric heating element in our hvac.

I doubt that the egr has any large effect on warmup, although the cooler will throw some heat into the coolant.

[Hoooper]

Originally Posted by floydarogers

I doubt that the egr has any large effect on warmup, although the cooler will throw some heat into the coolant.

TDI did a comparison and there was a definite difference between the two. I dont think it means much though other than a bit more fuel wasted on warmup.

[9mmkungfu]

Thanks for all the replies. So, while engine warm up time may be lengthened, the factory-supplied, built-in electric heater should be able to supply warm air within the same amount of time as an EGR-equipped vehicle.

Does this seem like an accurate statement?

[sukutash]

Originally Posted by floydarogers

+ Yes, there is an electric heating element in our hvac.

I doubt that the egr has any large effect on warmup, although the cooler will throw some heat into the coolant.

The exhaust gas recirculation, EGR, is just that. HOT exhaust gases (bleed air from your exhaust if you will) are being directly introduced in to the intake stream. This, in addition to, as you mentioned the egr cooler, also decreases warm-up time.

[sukutash]

Originally Posted by 9mmkungfu

Thanks for all the replies. So, while engine warm up time may be lengthened, the factory-supplied, built-in electric heater should be able to supply warm air within the same amount of time as an EGR-equipped vehicle.

Does this seem like an accurate statement?

I would agree.

[Hoooper]

Originally Posted by 9mmkungfu

Does this seem like an accurate statement?

Yes I would think so. If there is a difference in cabin heat time, I havent noticed it to be appreciable. If I start my car and its 45F (about the coldest its ever been in my garage here) it seems the heat is blowing within a half mile down the street. Which is surely much less than 5 minutes after starting. Someone with legitimate cold start experience might be able to give a better review.

[dixy2k]

The engine will take a little longer to warm up. Meanwhile you can see EGT going up more than usual 500-600 degrees, until the coolant reaches about 160F or "optimal operating temperature".

[Vreimann]

Originally Posted by 9mmkungfu

Today, it was 6° outside. The 335d start to put out warm air after about 3 minutes of steady driving.

For those that have EGR blocked/tuned out or a combination of the two, do you notice any significant increase in engine warm up time?

Significant increase (for myself) can be defined as at least an extra 5 minutes.

I may run mine a bit different than the rest, but with my EGR blocked I cover the kidney grill with cardboard and I cover 60% of the intercooler. As long as temperatures are colder than -5C I keep both covered. I typically idle the car until oil is about 20-25C (3-4 mins) and within about 3-5 mins of driving the car is throwing good heat. I use the heated seat until it feels warm and then shut it off and start driving.

With weather today its not really that bad at -20C but it heats nice. At -30C you will want to start off driving after 3 mins regardless because even a small load helps to heat it up better than idling.

[PSEE]

even with single digit F temperatures, the ceramic heater present in the
335d provides a bit of warm air in as little as 1/4 mile of driving after initial
startup and 30 seconds of warmup time.